168 	int r = -ENOMEM;  in alloc_area()  local
198 	return r;  in alloc_area()
285 	int r;  in area_io()  local
290 	r = chunk_io(ps, ps->area, chunk, rw, 0);  in area_io()
291 	if (r)  in area_io()
292 		return r;  in area_io()
309 	int r;  in read_header()  local
332 	r = alloc_area(ps);  in read_header()
333 	if (r)  in read_header()
334 		return r;  in read_header()
336 	r = chunk_io(ps, ps->header_area, 0, READ, 1);  in read_header()
337 	if (r)  in read_header()
349 		r = -ENXIO;  in read_header()
369 	r = dm_exception_store_set_chunk_size(ps->store, chunk_size,  in read_header()
371 	if (r) {  in read_header()
374 		return r;  in read_header()
377 	r = alloc_area(ps);  in read_header()
378 	return r;  in read_header()
382 	return r;  in read_header()
451 	int r;  in insert_exceptions()  local
482 		r = callback(callback_context, e.old_chunk, e.new_chunk);  in insert_exceptions()
483 		if (r)  in insert_exceptions()
484 			return r;  in insert_exceptions()
495 	int r, full = 1;  in read_exceptions()  local
537 			r = PTR_ERR(area);  in read_exceptions()
541 		r = insert_exceptions(ps, area, callback, callback_context,  in read_exceptions()
551 		if (unlikely(r))  in read_exceptions()
559 	r = 0;  in read_exceptions()
564 	return r;  in read_exceptions()
613 	int r, uninitialized_var(new_snapshot);  in persistent_read_metadata()  local
619 	r = read_header(ps, &new_snapshot);  in persistent_read_metadata()
620 	if (r)  in persistent_read_metadata()
621 		return r;  in persistent_read_metadata()
637 		r = write_header(ps);  in persistent_read_metadata()
638 		if (r) {  in persistent_read_metadata()
640 			return r;  in persistent_read_metadata()
645 		r = zero_disk_area(ps, 0);  in persistent_read_metadata()
646 		if (r)  in persistent_read_metadata()
648 		return r;  in persistent_read_metadata()
668 	r = read_exceptions(ps, callback, callback_context);  in persistent_read_metadata()
670 	return r;  in persistent_read_metadata()
768 	int r;  in persistent_prepare_merge()  local
781 		r = area_io(ps, READ);  in persistent_prepare_merge()
782 		if (r < 0)  in persistent_prepare_merge()
783 			return r;  in persistent_prepare_merge()
810 	int r, i;  in persistent_commit_merge()  local
818 	r = area_io(ps, WRITE_FLUSH_FUA);  in persistent_commit_merge()
819 	if (r < 0)  in persistent_commit_merge()
820 		return r;  in persistent_commit_merge()
932 	int r;  in dm_persistent_snapshot_init()  local
934 	r = dm_exception_store_type_register(&_persistent_type);  in dm_persistent_snapshot_init()
935 	if (r) {  in dm_persistent_snapshot_init()
937 		return r;  in dm_persistent_snapshot_init()
940 	r = dm_exception_store_type_register(&_persistent_compat_type);  in dm_persistent_snapshot_init()
941 	if (r) {  in dm_persistent_snapshot_init()
945 		return r;  in dm_persistent_snapshot_init()
948 	return r;  in dm_persistent_snapshot_init()